A newsletter by psychologist Cat Hicks applying research on psychology to software teams, covering topics like AI skill threat, identity, norms, and organizational fairness. Readers get long-form essays, a collaborative series with Charity Majors, and practical resources such as a book club guide.

Kaizen is a Spanish-language newsletter that accompanies a podcast and explores how people learn, persuade, and think about the world through history, psychology, and behavioral science. Issues combine storytelling, biographical portraits, and guest contributions that explain concepts such as ethical influence, pace layers, and deliberate learning habits.

Cultivated publishes short, essay-style notes on how ideas gain value through communication, thinking, creativity and teamwork. Each issue uses a historical book, phrase or notebook habit to draw out practical lessons about work and thinking.

Range Widely is David Epstein's newsletter for generalists, featuring author Q&As, research-driven essays and updates on his work. Readers get thoughtful takes on psychology, learning, and human connection drawn from studies and conversations with leading thinkers.